Driving mechanism for conveyers.



No. 869,488. PATENTED OCT. 29; 1907. G.'VON HANIISTENGEL. DRIVING MECHANISM IOR GONVEYERS.

APPLICATION FILED JAN.15,1907.

mYENTQR, GEQRQ voN HANFFSTENGEL BY )l Q ATTORNEY.

WlTNESSES- FATENT OFFIOE.

GEORG VON HANFFSTENGEL, Ol" STUTTGART, GERMANY.

DRIVING MECHANISM FOR CONVEYERS.

Specification of Letters Patent.

Patented Oct. 29, 190'?.

Application filed January 15. 1907. Serial No. 352.1130.

To all whom L may concern:

Be it known that I, GEORG VON HANrns'rnNGnL, a citizen of the German Empire, residing at Stuttgart, Reinsburgstrasse 142, Kingdom of \\"iirtemberg, Germany, have invented certain new and useful Improvements in Driving Mechanism for Conveyors and the Like, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a driving mechanism for conveyers and the like, especially'such with chains ol long links, the purpose ol' which is, to effect a motion,` which is even and free of shock. Such conveyors frequently are driven by chain wheels 't'. c. by rigid organs, which as is known, effect an uneven movement accompanied by jerks. The reason is, that the perpendicular distance of the chainlinks, which come into Contact with the wheel, from the center is changing, which distance controls the motion of the chain. This uneven motion is very injurious to the material of the chain, so that often after some time of working a chain breaks, although it seems to have been made strong enough. The usual way to avoid this injury to the chains as far as possible is the use of a very low speed. In my invention I avoid this inconvenience by connecting the organs which seize and carry along thc chain not rigidly with the drive, but guiding tliem by a suitably shaped curve and moving them in such a way tlat the otherwise uneven movement of tl e chain is compensated by the movement of these organs and becomes perfectly even. In order also to avoid the jerks which appear when the pitch of the cl? ain is not accurate at the moment the cliain comes into contact with tlte driver, `he beginning of the curve is a little different from the theoretical curve, so tit at these organs come into contact gradually, The drive therefore works altogether evenly and smoothly, so that the speed can be considerably higher than when rigid wleels are used. Other mechanisms are known designed fer the same purpose. l3nt their drawback, which is very essential for conveyors, is, that they can be applied only to the straight part of tle conveyor and always form an addition to the whole for which in many cases it is l ard to [ind room, while the drive invented by me, is put in only in the place of deflecting organs which would be necessary anyhow.

The accompanying drawing shows a way how my invention can be put to work.

Figure 1 is a side view and partly a section; Fig. 2 a front view of Fig. 1 and partly a section.

The driving mechanism invented by me serves to drive conveyors which themselves are known, especially such with chains of long links, and the like. The conveycr consists for instance of the endless chain a, formed of double links, to which thc buckets b are pivoted by the pins c. On thc straight part of the conveyor the chain a is guided by rollers d,' moving on rails c.

The driving mechanism consists of the wheels g, keyed to the drivingr sl1at'tf, to which a convenient number of bent levers t' is fastened, which have suitably shaped catches to take hold 0f the chain rollers d. At their free end the bent levers i carry rollers I, moving on curved disks 111 which are located loosely on the shaft]l or on the hubs of the driving wheels g and are kept from revolving by arms n fastened to tie structure, or the like. The curved part nil of the disks yo1 is siiaped in such a way that the calci` es lo begin slowly to-take hold of the chain rollers, whereupon they get a gradu ally increasing and then gradually decreasing speed, compensating for the irregularities which otherwise would appear. Ti e guided ends of the bent levers are kept from falling ont, when tlrc driving wheel rcvolvcs, by webs o, on which thc levers` i rest.

I claim as my invention:

Il. ln a driving mechanism lor conveyors and the like, a driving wheel and a convcycr passing around and engaging said wheel, the latter having levers pivotcd thereto at intervals, one end ot' cach lever projecting from the wheel and constitutingl a catch and the other end ot` nach levcr provided with a roller. and a lixod disk whose periphery is engaged by the rollers aforesaid as the wheel revolves und is formed to move the aforesaid catches gradually into engagement with thc conveyor und to positively maintain said engagement while the conveyor is in engagement with the wheel.

L. ln a driving mechanism for conveycrs and the like, a drivingl wlicel and a conveyor passing around and engaging said wheel, the latter having levers pivoled thereto at intervals, one end ot' each lever projecting t'roni the wheel and constituting a catch and the other cud ol' each level' provided with :i roller and a tixed disk whose peripherl is engaged by the rollers it'oresnid as the wheel revolves and is i'ormod tolit't the aforesaid catches and to gradually project the same from the wliecl while positively maintaining the same in engagement with the convcycr.

Cl. In a driving mechanism ior convcyc" and the like. a drivingl wheel having levers pivoied thereto at' intervals, one end ot' cach lever projecting trom the wheel and constituting a catch and the other end ot' cach lever provided with a roller, and a lixed disk whose periphery is engaged by the rollers aforesaid as the wheel revolves and is provided with a succession ot' separate cams.

ln testimony whereot l atlix my signature. in presence of two witnesses.

GEORG YON HANIFFS'IIGN(HCL. Witnesses 1 HERMANN lloi'rn, RUoont Binicn'r. 

